Digital BW, The Print

Steve,

I'm not sure I follow what you did, but If you made a curve with just 
LC/LM/LK and then printed a step wedge with this profile it might look 
strange because you have no K.  I haven't used the 21 step.psd file 
with the wedge you mentioned so I don't know how it prints with these 
profiles.  I just wonder if the bands you are getting are from 
posterization.

Carl

On Saturday, January 24, 2004, at 02:05  PM, Steve Kale wrote:

> Carl
>
> As part of my continuing poking under the hood of QTR I printed the 21 
> step
> wedge file 21step.psd using firstly your 100% EEM cool then 100% warm 
> (and
> then also a curve using just the 27/27/56 LC/LM/LK mix you used to 
> produce a
> cool LK in order to see clearly the hue of the cooled LK).  In each 
> printout
> there is on the top 1/3 part of the strip which has the smoothed 
> transition
> a dark patch from 100 to say 97, ie at smooth transition abruptly stops
> around 97 and 97-100 is the same shade of grey.  I suspect that this 
> should
> not be the case – it is not that way on the screen.  What’s causing 
> this?
> Is it simply that the two ends of this image are not part of the 
> scale? – I
> note that when looking at the stepped (bottom) part of each image the 
> 100
> and 0 blocks are wider than the rest and the dark patch I see kicks in
> exactly 1cm to the left of the right side 100% marker (each 5% block 
> being
> 1cm).  If this is the case I am surprised that the extra bit on the 
> left is
> abruptly darker than where the 100% mark would be.
>
> Can you also explain to me the second scale on this file ie 0-160.
>
> Cheers
>
> Steve
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
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